What is the additive inverse of 20?

What is the additive inverse of 20 and how do you calculate the additive inverse of 20?

The additive inverse of 20 is the number that when added to 20 will equal 0. Here is the equation to solve the problem where x is the additive inverse of 20:

20 + x = 0

When we solve the equation above for x, we get x = -20. Thus, the answer to "What is the additive inverse of 20?" is -20.

Additive Inverse of 20 = -20

The two addends in an addition equation are interchangeable, which means that the answer to "What is the additive inverse of -20?" or "What is the additive inverse of negative 20?" is 20.

Since the additive inverse of 20 is -20, additive inverse is also known as the opposite number. To get the additive inverse of a postive number you put a minus in front of it and to get the additive inverse of a negative number, you remove the minus to make it a positive number.

This also means that the double additive inverse of 20 is 20, because you add the minus and then remove it again.

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What is the additive inverse of 21?
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